--- title: "CERTIFIED REFRIGERATION & MECHANICAL LLC | DOT 3973619 | Carrier Profile" description: "CERTIFIED REFRIGERATION & MECHANICAL LLC is a interstate carrier based in MADISON, WI. Fleet size: 125 power units, 125 drivers. DOT# 3973619, MC# 1485630." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "LocalBusiness", "name": "CERTIFIED REFRIGERATION & MECHANICAL LLC", "alternateName": "COMFORT SYSTEMS|NORTHWEST REFRIGERATION SERVICES|METROPOLITAN FOOD SERVICE EQUIPMENT|DONS SHEET METAL", "url": "https://runalphaloops.com/carrier/wi/3973619/certified-refrigeration-mechanical-llc", "areaServed": [ { "@type": "State", "name": "WI" } ], "address": { "@type": "PostalAddress", "streetAddress": "5817 FEMRITE DR", "addressLocality": "MADISON", "addressRegion": "WI", "postalCode": "53718", "addressCountry": "US" }, "telephone": "6082746890", "identifier": [ { "@type": "PropertyValue", "name": "DOT Number", "value": "3973619" }, { "@type": "PropertyValue", "name": "MC Number", "value": "1485630" } ], "numberOfEmployees": { "@type": "QuantitativeValue", "value": 125 } }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What is CERTIFIED REFRIGERATION & MECHANICAL LLC's DOT number?", "acceptedAnswer": { "@type": "Answer", "text": "CERTIFIED REFRIGERATION & MECHANICAL LLC's USDOT number is 3973619. Their motor carrier number (MC#) is 1485630. These numbers are assigned by the Federal Motor Carrier Safety Administration (FMCSA)." } }, { "@type": "Question", "name": "Where is CERTIFIED REFRIGERATION & MECHANICAL LLC located?", "acceptedAnswer": { "@type": "Answer", "text": "CERTIFIED REFRIGERATION & MECHANICAL LLC is based in MADISON, WI 53718. They can be reached at 6082746890." } }, { "@type": "Question", "name": "How large is CERTIFIED REFRIGERATION & MECHANICAL LLC's fleet?", "acceptedAnswer": { "@type": "Answer", "text": "CERTIFIED REFRIGERATION & MECHANICAL LLC operates 125 power units with 125 drivers." } }, { "@type": "Question", "name": "Is CERTIFIED REFRIGERATION & MECHANICAL LLC currently active?", "acceptedAnswer": { "@type": "Answer", "text": "CERTIFIED REFRIGERATION & MECHANICAL LLC's USDOT registration is currently listed as active." } } ] }, { "@context": "https://schema.org", "@type": "WebSite", "name": "AlphaLoops", "alternateName": [ "AlphaLoops.com", "Run AlphaLoop" ], "url": "https://runalphaloops.com/" } ] --- [![AlphaLoops](/lovable-uploads/AlphaLoops-Logo-2025_Black-Type_White-Background_3280x1024.png)](/) [Our Data](/our-data)[AI Capabilities](/ai)[Pricing](/pricing)[Research](https://research.runalphaloops.com/)[Contact](/contact) 1. [Home ](/) 2. / 3. [Carriers ](/carriers) 4. / 5. 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CERTIFIED REFRIGERATION & MECHANICAL LLC Active Interstate # CERTIFIED REFRIGERATION & MECHANICAL LLC DBA: COMFORT SYSTEMS|NORTHWEST REFRIGERATION SERVICES|METROPOLITAN FOOD SERVICE EQUIPMENT|DONS SHEET METAL Unlock full report — $30 Risk score · full evidence · 72-hour access · No account required DOT # 3973619 MC # 1485630 Location MADISON, WI Phone [6082746890](tel:6082746890) Profile Claim this profile Power Units 125 Drivers 125 Trailers 1 Annual Miles In full report Entity Type N/A MCS-150 Date Oct 21, 2022 ## Risk Signals — CERTIFIED REFRIGERATION & MECHANICAL LLC Scanning active / 10 NOT RATED Full risk analysis — historical patterns, fraud connections, financial signals — runs when you… Authority for sale No active listings detected… CLEAR Equipment for sale No fleet VINs found on marketplaces… CLEAR Financial risk Analyzed in the full report… LOCKED Fraud signals Connection analysis in the full report… LOCKED Historical patterns Pattern analysis runs when you unlock the report… LOCKED Recent activity No adverse news in 90 days… CLEAR Unlock the full vetting report Get the exact risk score, full analysis, and the specific evidence + sources behind every signal. Unlock full report — $30Included in the full report → One-time · no account required ## Counterparty Reports Email-verified, moderated transaction reports from brokers, shippers, and carriers who worked with CERTIFIED REFRIGERATION & MECHANICAL LLC. No verified counterparty reports yet Worked a load with CERTIFIED REFRIGERATION & MECHANICAL LLC? Be the first to report how it went. Review this carrier ## About CERTIFIED REFRIGERATION & MECHANICAL LLC CoolSys specializes in providing comprehensive refrigeration and HVAC services across the United States. They offer solutions for both commercial and industrial sectors including energy optimization, engineering consulting, equipment project management, and sustainable end of use solutions. CoolSys also focuses on helping clients reduce energy costs, improve system performance, and achieve environmental sustainability goals. Their services cater to a wide variety of markets such as healthcare, institutional services, and more, supported by a large team of skilled technicians and engineers. The company prides itself on exceptional customer service, prompt issue resolution, and high-quality workmanship. #### Key Features Commercial Refrigeration & HVAC Industrial Refrigeration & HVAC Energy Solutions Engineering Solutions Equipment Project Management Sustainable End of Use Solutions ### Service Regions Active in 1 states Top states: WI Full state-by-state operating volumes, inspection locations, and lane coverage analysis. Included in the full report → ### CSA Safety Scores 5 BASICs 5 BASICs measured Percentile rankings pending FMCSA publication — raw measures + violations available in the report. Full BASIC percentiles, measure scores, BASIC + roadside alerts, and Acute Carrier flags from the latest FMCSA SMS snapshot. Included in the full report → ## Operating Authority Common Authority No Authority Contract Authority No Authority Broker Authority No Authority ### Insurance & Coverage BIPD, cargo, and excess liability coverage amounts, policy history, and insurer names. Included in the full report → ## Contact Information 6082746890 Physical Address 5817 FEMRITE DR MADISON, WI 53718 ## Cargo & Operations Cargo Carried Construction ### Fleet Analytics 2 trucks Top manufacturers PETERBILT KENWORTH Sample units 1GC1KWE87FF5XXXXX 2015 PETERBILT 220 1GC3WLE70NF1XXXXX 2022 KENWORTH T800 Full manufacturer, model, and model-year breakdown plus the VIN-level fleet roster. Included in the full report → Are you CERTIFIED REFRIGERATION & MECHANICAL LLC? Claim this profile to respond to reviews, keep your info current, and dispute inaccurate signals. Free forever. Claim this profile Vet at Scale ## Need more than a one-off vetting report? 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